Eddy current tuned mass damper

Abstract

The invention belongs to the technical field of energy dissipation and vibration reduction of disaster prevention and reduction and particularly relates to an eddy current tuned mass damper. The eddy current tuned mass damper comprises an upper top plate and a mass block composed of mass block bodies; connecting holes are formed around the upper top plate and the mass block bodies, the upper top plate is provided with spring connecting holes for being connected with spring spiral heads; lifting screw holes are formed in the two sides of the upper top plate; the upper spring spiral heads are connected with the upper top plate and provided with screw threads for being connected with springs; the lower spring spiral heads are connected with a lower bottom plate and provided with screw threads for being connected with springs; permanent magnets are disposed between the springs and the lower spring spiral heads; the permanent magnets and the lower spring spiral heads are in bolt connection; and a middle guide rod and the lower bottom plate are in bolt connection, the permanent magnets are arranged outside the middle guide rod, and the permanent magnets are in bolt connection with the middle guide rod. The eddy current tuned mass damper has the advantages of being high in damping, adjustable in frequency according to different working conditions, good in durability and easy to replace.

Description

technical field [0001] The invention belongs to the technical field of disaster prevention and mitigation, energy dissipation and vibration reduction, and in particular relates to an eddy current tuned mass damper. Background technique [0002] A damper is a device that provides resistance to movement and consumes movement energy. The use of damping to absorb shock is not a new technology. Various dampers (or shock absorbers) have been used in aerospace, aviation, military, guns, automobiles and other industries to reduce vibration and energy. Since the 1970s, people have gradually transferred these technologies to structural engineering such as buildings, bridges, and railways, and their development has been very rapid. [0003] A tuned mass damper (TMD) consists of mass, spring and damping system. By adjusting its vibration frequency to the vicinity of the frequency of the main structure, the resonance characteristics of the structure are changed to achieve shock absorpt...

AI Technical Summary

Problems solved by technology

The damping system of an ordinary tuned mass damper is provided by a viscous damper, and the viscous damper is prone to liquid leakage during common use. After the liquid flows out, the damping provided by the viscous damper will also decrease, affecting The shock absorption effect of the damper, and in the process of use, the durability of the viscous damper is poor and has not been replaced, which affects the durability of the overall structure's seismic performance

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